AVIT 309 EXAM 2 QUESTIONS AND ANSWERS
What are the three primary sources of orientation in aviation? - CORRECT ANSWER✅✅Visual,
Vestibular, Proprioception
What percentage of inflight orientation does visual orientation provide? - CORRECT ANSWER✅✅90%
Proprioceptive senses allow humans to sense what? - CORRECT ANSWER✅✅Movement and Body
position
Vestibular sense allow humans to sense what? - CORRECT ANSWER✅✅Angular accerlation
What two components make up the vestibular apparatus? - CORRECT ANSWER✅✅Otolith organs and
Semi-Circular Canals
What should be the speed of a turn for sub-threshold acceleration? - CORRECT ANSWER✅✅Less than 3
degrees a second
What are the two main components of human visual systems? - CORRECT ANSWER✅✅Peripheral and
Central
What are the three phases of vision? - CORRECT ANSWER✅✅Photopic, Scotopic, Mesopic
Where is peak visual acuity located? - CORRECT ANSWER✅✅Central Vision, Central 2 degree cone
How large is the human perceptible field of view? - CORRECT ANSWER✅✅120 x 120
Where is the night visual blind spot located on the visual field? - CORRECT ANSWER✅✅Central 2
degrees/central vision
, What are the 2 technologies used for enhanced visual systems? - CORRECT ANSWER✅✅Light
Intensification and Infrared
What is the recommendation for visual scanning inflight for instruments versus outside the aircraft? -
CORRECT ANSWER✅✅3/4 outside 1/4 inside
True or false: SDO may rapidly transition from unnoticed to incapacitating - CORRECT ANSWER✅✅True
SDO typically happens when an aviator cannot visually confirm orientation with what? - CORRECT
ANSWER✅✅The horizon
Ture or false: Fatigue may lead to SDO by causing routine tasks or scans to be skipped - CORRECT
ANSWER✅✅True
What is the average experience level for pilots involved in SDO related accidents? - CORRECT
ANSWER✅✅1000+ hours, 10 years, very experienced
What compensatory reflexive action typically happens to a pilot's head in a banking turn? - CORRECT
ANSWER✅✅Optokinetic Cervical Reflex
Which SDO illusion affects a pilot's ability to focus their eyes after rolling out of an extended turn? -
CORRECT ANSWER✅✅Oculogyric illusion
Which SDO illusion causes a pilot to feel as if the aircraft nose suddenly pitched up during acceleration in
low vis conditions? - CORRECT ANSWER✅✅Somatogravic Illusion
Which SDO illusion causes a turning sensation following roll-out from an extended turn? - CORRECT
ANSWER✅✅Somatogyric Illusion
Which SDO illusion typically starts with a subthreshold turn? - CORRECT ANSWER✅✅Graveyard Spin
What are the three primary sources of orientation in aviation? - CORRECT ANSWER✅✅Visual,
Vestibular, Proprioception
What percentage of inflight orientation does visual orientation provide? - CORRECT ANSWER✅✅90%
Proprioceptive senses allow humans to sense what? - CORRECT ANSWER✅✅Movement and Body
position
Vestibular sense allow humans to sense what? - CORRECT ANSWER✅✅Angular accerlation
What two components make up the vestibular apparatus? - CORRECT ANSWER✅✅Otolith organs and
Semi-Circular Canals
What should be the speed of a turn for sub-threshold acceleration? - CORRECT ANSWER✅✅Less than 3
degrees a second
What are the two main components of human visual systems? - CORRECT ANSWER✅✅Peripheral and
Central
What are the three phases of vision? - CORRECT ANSWER✅✅Photopic, Scotopic, Mesopic
Where is peak visual acuity located? - CORRECT ANSWER✅✅Central Vision, Central 2 degree cone
How large is the human perceptible field of view? - CORRECT ANSWER✅✅120 x 120
Where is the night visual blind spot located on the visual field? - CORRECT ANSWER✅✅Central 2
degrees/central vision
, What are the 2 technologies used for enhanced visual systems? - CORRECT ANSWER✅✅Light
Intensification and Infrared
What is the recommendation for visual scanning inflight for instruments versus outside the aircraft? -
CORRECT ANSWER✅✅3/4 outside 1/4 inside
True or false: SDO may rapidly transition from unnoticed to incapacitating - CORRECT ANSWER✅✅True
SDO typically happens when an aviator cannot visually confirm orientation with what? - CORRECT
ANSWER✅✅The horizon
Ture or false: Fatigue may lead to SDO by causing routine tasks or scans to be skipped - CORRECT
ANSWER✅✅True
What is the average experience level for pilots involved in SDO related accidents? - CORRECT
ANSWER✅✅1000+ hours, 10 years, very experienced
What compensatory reflexive action typically happens to a pilot's head in a banking turn? - CORRECT
ANSWER✅✅Optokinetic Cervical Reflex
Which SDO illusion affects a pilot's ability to focus their eyes after rolling out of an extended turn? -
CORRECT ANSWER✅✅Oculogyric illusion
Which SDO illusion causes a pilot to feel as if the aircraft nose suddenly pitched up during acceleration in
low vis conditions? - CORRECT ANSWER✅✅Somatogravic Illusion
Which SDO illusion causes a turning sensation following roll-out from an extended turn? - CORRECT
ANSWER✅✅Somatogyric Illusion
Which SDO illusion typically starts with a subthreshold turn? - CORRECT ANSWER✅✅Graveyard Spin
